Gas-burner.



G. W. GRAVES.

GAS BURNER.

APPLICATION man sEPT.4,1914.

lj, l {5&9} 2.2 Patented Apr. 6, 1915.

wirk/@emo esononfw. emula. or wAsHINeroNvrLLE,-, NEW' Yonx. l

GASBUENEE.

Specicatianof Letters vPatent Patented Apr..e,.1915.

Apnucatmnslemsqpmber 4,1914. serialfno. seais?.

T :allg/whom 'it may-concern# it-lmown that I, GEORGE WV. GRAVES,

I' l-"""Washingtonville, in the county of v0range and State of New York, have in'- vented certain new and usefulImprovements in Gas-Burners; and Ido hereby de-v clare the following'to be a full, clear, and exact description of the same, reference being had to the accompanying drawings,

forming a part of'this specification, andto the reference-numeralsv marked. thereon.

My present invention has for its object to-y provide a new type oflgas burner adapted to be used in conjunction with a gas stove or range and to be employed particularly for heating the oven chamber, the novel features of the burner residing in a three part construction whereby an intense` and evenly distributed heat may beproduced; a

.less intensive h'eat maintained beneaththe. opposite sides oi' the oven bottom, or a very moderate degree f heat generated beneath the center of the oven bottom.

To these and other ends the invention consists in certain improvements and combinations of parts, all as will be hereinafter more `fully described, the novel features being pointed out in the claims at the end of the specification. l

In the drawings: Figure 1 is-a top plan view of a burner constructed in accordance with my present invention. Fig. 2 is a side elevation taken along4 theline 2"--2x of Fig. l, andFig. 3 is across sectional view taken on the linel 3"-3X of'Fig. 2.

Similar reference numerals throughout the severalviewsindicate the same parts..

Burners constructed in accordance with my invention, although adapted for other heating purposes, are/,intended primarily to be employed asthe source of heat for ovens of gas stoves orranges and in the present illustrations I have; shown, in the, several figures, fragments of. a: stove, the front and rear plates thereof being indicated by 1 and tween these parts is indicated by 3. Ini 3 the side walls of the stove are shown and indicated by 4, as are also portions of the side walls of the oven, which latter are indicated by 5, the space between the walls 4 and 5 at the two sides of the stove comprising the lues through which the heated prod. .ucts of combustion pass upwardly and cir- 0 while the ovenbottom which extendsbe culate around the oven chamber, as will be understood An ovenburner constructed in accordance with my. invention may be generally de'- scrib'ed as U-shaped and having a central tubular portion located intermediate the' main arms or side portions of the burner. The latter may be made in a single casting, as shown although Ano communication exists between the two side arms and the intermen diate portion of the burner as the gas sup? plied to these parts is admitted through separate valves and the flames or jets in the two parts should be independently regulated.. The mainjpotion of the burner comprises the parailelside arms 6 and 7 which are united by tli'ecurved end portion 8 and are separated more or less accordingto the width of the oven chamber with which the burner is to be associated. The proper proportion between the parts is shown in Fig. 3 in which it will be seen that the side arms 6 and 7 of the main burner are positioned be- "neath the center of each lateral half portion of the ovenrbottom. The lauxiliary portion of thevbzi'irnerg" indicated by 9, lies midway between the parts 6 and 7 and occupies a position beneath the center. of the ovenchamber. Itis supported at its inner end lar mixing chamber 12 is provided on one of the arms or side pieces of the main burner and receives gas admitted thereto fromthe cock. 13. The gascocks `11 and-13,

on the curved end 8 of the main burn '.fanglfa it will be. understood, are connected tcfa source of'supply such as a gas main -or pipe 17. which preferably extends across the liront .of the stove, the burner vbeing extendedrear-wardly thus-placing the gas cocks in' an. accessible position and convenient for regulation bythe operator. v,

Both the main and the auxiliary burners may bre-'utilized Separately or together accovding to the temperature which itis desired to obtain but as the main burneris of greater lengththan the intermediate or auxiliary burnerand heats an area morethan twice as great'as the auxiliary burner, I provide the arms and 7 with gasjet outlets or orifices 6 and 7 situated only on their lateral edges. The central or auxiliary burner not forni eddies in currents which impinge against the bottom 9y is provided with outlet orices 9a at both its sides so that when this burner is working to its fullest extent the volume of gas consumedand the heat units generated will be equivalent to that. obtained from the two arms of the main burner. The burners embodying my invention may be constructed in any desired cross sectional shape, vbut as a further feature of my invention I .prefer to make the several arms thereofsubstantially triangular inv cross section, as shown iii-Fig. 3,.and to round the lower surfaces slightly, as shown, so that they will the upwardly moving air of the burner. On the latter are provided longitudinally burner along the lines on which the orifices 627ia and 9, are to be drilled. These ribs or beads not only facilitate drilling the orifices inthe burnercasting but as they project slightly. beyond `the adjacent surface of the .burner a clearcut long tapered flame is obtained. .The .orifices being drilled at the lateral edges of the bottom portion of the burner and the top parts of the latter' being for-ined by the inclined walls, the gas dames when burning at full head, do not hug or come in contact with the sides of the burner and the latter therefore does not become excessivelyhot when in operation.

extending rib's formed in the -Overlying the burner :and preferably lo-I cated near its forward endisan igniting device or flame conductor which opens into the oven chamber. The igniter is in the formo1' ycentral portion or stem lli having lateral exy and 16 resting upon and extending ends 15 tending slightly beyond the side portions 6 and 7 of the main burner, as well as the centml QI' auxiliary burner 9, whereby the gascautionary measure which is adopted to obviate the ossibility of explosion as a result l fof-fan laccidental, accumulation of gasin the 502- oven chamber. y

A gas burner constructed in accordance with my invention 1s simple inconstruction,

in that it can be made of a single piece of cast metal and efficient in one-ration because ashell, open on its lower side; comprising a maintained and the heat always-*delivered at such a point -or points, that it is evenly dis l 1. A gas burnery comprising two connected portions spaced apart and forming a tube continuous throughout its length adapted to receive a supply of gas, and an intermediate portion extending parallel to and between the connected portions andV adapted to receive an independent supply of gas.

' 2. A U shaped gas burnerhaving the two arms each perforated along one of their lateral edges and comprising an intermediate portion perforated along both of its lateral edges, a supply of gas for said two arms' and an independent supply of gas-.for said intermediate portion.

3. A gas burner having two'cnnected apart and an intermediate.

portions spaced portion separate from and supported on said two connected portions; the end of one of the latter and the adjacent end of said intermediate portion being each adapted to re* Aceive independent supplies of gas.

t. A U shaped tubular member forming a main gas burner composed of two spaced portions and provided with a central tubular portion forming an auxiliary burner, said main and auxiliary burners being each adapted to be independently supplied with gas.

` 5. A gas burner comprising a tubular .member substantially triangular in cross vsection and disposed horizontal and provided with outlet orifices l with its lower side vlocated' substantially at the junction bel tween said lower side and onev of the upany desired degree of ten peratureniay he wardly extending sides.

6. A gas burner comprising a triangular -tube having a longitudinally extending exterior rib and a row of lgas jet orifices provided in said rib. y,

' GEORGE w'. GRAVES.

witnesses; l

STUART H. Swrrznn, LILLIAN M. Knownns. 

